Arc flashes are a risk when working with high-voltage electrical systems. An arc fault circuit breaker is an electrical component meant to interrupt the flow of electricity to prevent injury to workers. These components can be installed in series (where EITHER component would have to operate to stop the flow of electricity) or inparallel(where BOTH components would have to operate to stop the flow of electricity).

If the probability of the arc fault circuit breaker correctly operating is 86 %, determine:

a) the probability that the series configuration would operate correctly

Round to 4 decimal places.

b) the probability that the parallelconfiguration would operate correctly

Round to 4 decimal places.

Which configuration offers better protection against injury?

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